How long does it take after cocaine or crack is used before it is non-detectable in blood or urine screenings?

AnswerCocaine or crack can remain present up to approximately 5-6 hours after your last use. It's metabolite - Benzoylecgonine - can be detected for up to approximately 2-3 days after your last use.

It can also depend on a few personal factors, such as your metabolism, body weight, activity level and general nutrition.